Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.
Premier Dmitry Medvedev launches inquiry into the tragedy which leaves almost 600 injured.
Enough joking. New NASA-Russian research is leading to concern that global warming is causing truly disturbing changes to the virgin forests of northern Russia.
Law enforcement officers sought to 'force confessions from students' in case of US citizen Colin Madsen, found dead in Buryatia.
Agafya Lykova rejects leaving her remote house even though debris from coming rocket launch could fall dangerously close.